
This is a list of wars involving North Korea and its predecessor states.

The Korean DMZ Conflict, also referred to as the Second Korean War by some, was a series of low-level armed clashes between North Korean forces and the forces of South Korea and the United States, largely occurring between 1966 and 1969 at the Korean DMZ.

The Korean War was a war between North Korea and South Korea. The war began on 25 June 1950 when North Korea invaded South Korea following clashes along the border and insurrections in the south. The war unofficially ended on 27 July 1953 in an armistice.

On 23 January 1968 North Korean patrol boats supported by two Mikoyan-Gurevich MiG-21 fighters captured the USS Pueblo northeast of the North Korean island of Ung-do. The seizure of the Pueblo led to President Lyndon Johnson ordering a show of force with a massive deployment of U.S. air and navy assets to Korea. The airlift and deployment of 200+ aircraft was code named Operation Combat Fox while the deployment of six aircraft carriers plus support vessels was code named Operation Formation Star. The operations were supported by the partial mobilization of reservists for the first time since the Cuban Missile Crisis. CIA A-12 Oxcart reconnaissance overflights over North Korea were used to monitor a feared retaliatory mobilization of North Korean forces and when these flights revealed no mobilization or large scale deployments by North Korean forces, Operation Combat Fox forces were stood down.

Operation Formation Star was the code name for the emergency re-deployment of U.S. Seventh Fleet warships to the Sea of Japan off the eastern coast of North Korea following that country's seizure of the USS Pueblo (AGER-2) in international waters on 23 January 1968.

In the Vietnam War, after the assassinations of Ngo Dinh Diem and John F. Kennedy in late 1963 and the Gulf of Tonkin incident in 1964 and the continuing political instability in the South, the United States made a policy commitment to begin joint warfare in South Vietnam, a period of gradual escalation and Americanization, involving the commitment of large-scale combat forces from the United States and allied countries. It was no longer assumed the Republic of Vietnam could create a desirable situation without major external assistance. This phase of the war lasted until the election of Richard Nixon, and the change of U.S. policy to Vietnamization, or giving the main combat role back to the South Vietnamese military.

The Vietnam War, also known as the Second Indochina War, and in Vietnam as the Resistance War Against America or simply the American War, was a conflict in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. It was the second of the Indochina Wars and was officially fought between North Vietnam and South Vietnam. North Vietnam was supported by the Soviet Union, China, and other communist allies; South Vietnam was supported by the United States, South Korea, the Philippines, Australia, Thailand, and other anti-communist allies. The war, considered a Cold War-era proxy war by some, lasted 19 years, with direct U.S. involvement ending in 1973, and included the Laotian Civil War and the Cambodian Civil War, which ended with all three countries becoming communist in 1975.